In nuclear reactors, graphite is used as a/an (1) fuel (2) lubricant (3) moderator(4) insulator

In nuclear reactors, graphite is used as a/an (1) fuel (2) lubricant (3) moderator(4) insulator
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In nuclear reactors, graphite is used as a/an – (1) fuel (2) lubricant (3) moderator (4) insulator

Description : In nuclear reactors, graphite is used as a/an – (1) fuel (2) lubricant (3) moderator (4) insulator

Last Answer : (3) moderator Explanation: A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are used for generating electricity and for the ... turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium-235.

In Nuclear reactors graphite is used as (1) Lubricant (2) Fuel (3) Linear of the reactor (4) Modulator

Description : In Nuclear reactors graphite is used as (1) Lubricant (2) Fuel (3) Linear of the reactor (4) Modulator

Last Answer : (4) Modulator Explanation: Nuclear reactors are used at nuclear power plants for electricity generation. These are generally graphite moderated and CO2 cooled.

Which of the following is used as a moderator in nuclear reactors? (1) Thorium (2) Graphite (3) Ordinary water (4) Radium

Description : Which of the following is used as a moderator in nuclear reactors? (1) Thorium (2) Graphite (3) Ordinary water (4) Radium

Last Answer : (2) Graphite Explanation: Graphite is used a moderator in nuclear reactors.

Which of the following is used as a moderator in nuclear reactors ? (1) Thorium (2) Graphite (3) Ordinary water (4) Radium

Description : Which of the following is used as a moderator in nuclear reactors ? (1) Thorium (2) Graphite (3) Ordinary water (4) Radium

Last Answer : Graphite

Graphite is a/an (A) Electrical insulator (B) Allotrope of carbon(C) Moderator used in nuclear reactor(D) Both (B) and (C)

Description : Graphite is a/an (A) Electrical insulator (B) Allotrope of carbon (C) Moderator used in nuclear reactor (D) Both (B) and (C)

Last Answer : (C) Moderator used in nuclear reactor

Graphite is used in nuclear reactor as (A) Insulation lining of the reactor (B) Fuel (C) Lubricant (D) Retarder of neutron velocity

Description : Graphite is used in nuclear reactor as (A) Insulation lining of the reactor (B) Fuel (C) Lubricant (D) Retarder of neutron velocity

Last Answer : (D) Retarder of neutron velocity

In a nuclear reactor the moderator is usually made of graphite placed between the fuel rods used to slow down neutrons all of the above none of the above?

Description : In a nuclear reactor the moderator is usually made of graphite placed between the fuel rods used to slow down neutrons all of the above none of the above?

Last Answer : Feel Free to Answer

Which one among the following is used as a moderator in nuclear reactors? (1) Ozone (2) Heavy hydrogen (3) Hydrogen peroxide (4) Heavy water

Description : Which one among the following is used as a moderator in nuclear reactors? (1) Ozone (2) Heavy hydrogen (3) Hydrogen peroxide (4) Heavy water

Last Answer : (4) Heavy water Explanation: A pressurized heavy-water reactor (PHWR) is a nuclear reactor, commonly using natural uranium as its fuel, that uses heavy water (deuterium oxide D2O) as its coolant and neutron moderator.

Which one among the following is-used as a moderator in nuclear reactors? (1) Ozone (2) Heavy hydrogen (3) Heavy water (4) Hydrogen peroxide

Description : Which one among the following is-used as a moderator in nuclear reactors? (1) Ozone (2) Heavy hydrogen (3) Heavy water (4) Hydrogen peroxide

Last Answer : (3) Heavy water Explanation: Heavy water is used in certain types of nuclear reactors, where it acts as a neutron moderator to slow down neutrons so that they are more likely to react with the fissile uranium-235 than with uranium238.

The moderator used in a nuclear reactor is – (1) Uranium (2) Radium (3) Ordinary water (4) Graphite

Description : The moderator used in a nuclear reactor is – (1) Uranium (2) Radium (3) Ordinary water (4) Graphite

Last Answer : (3) Ordinary water Explanation: Light water (ordinary water) is used as the moderator in U.S. reactors as well as the cooling agent. It acts as the means by which heat is removed to produce steam for turning the turbines of the electric generators.

The moderator used in a nuclear reactor is (1) Uranium (2) Radium (3) Ordinary water (4) Graphite

Description : The moderator used in a nuclear reactor is (1) Uranium (2) Radium (3) Ordinary water (4) Graphite

Last Answer : Ordinary water

Graphite is used in nuclear reactors for- (1) reducing the speed of fast neutrons (2) cooling the reactor (3) absorbing neutrons (4) None of the above

Description : Graphite is used in nuclear reactors for- (1) reducing the speed of fast neutrons (2) cooling the reactor (3) absorbing neutrons (4) None of the above

Last Answer : (1) reducing the speed of fast neutrons Explanation: A graphite reactor is a nuclear reactor that uses carbon as a neutron moderator, which allows unenriched uranium to be used as nuclear fuel.

Which of the following is used as a coolant in nuclear reactors? (1) Heavy water (2) Cadmium (3) Liquid sodium (4) Graphite

Description : Which of the following is used as a coolant in nuclear reactors? (1) Heavy water (2) Cadmium (3) Liquid sodium (4) Graphite

Last Answer : (3) Liquid sodium Explanation: Liquid metallic sodium may be used as the sole coolant, carrying heat from the core. Sodium has only one stable isotope, sodium-23. Sodium-23 is a very weak absorber of neutrons.

Which of the following is used as a moderator in nuclear reactors?

Description : Which of the following is used as a moderator in nuclear reactors?

Last Answer : Graphite

Why is a moderator used in nuclear reactors?

Description : Why is a moderator used in nuclear reactors?

Last Answer : – In order to slow down the speed of neutrons

The most commonly used moderator in nuclear power plants is (A) Graphite (B) Light water (C) Heavy water (D) Beryllium

Description : The most commonly used moderator in nuclear power plants is (A) Graphite (B) Light water (C) Heavy water (D) Beryllium

Last Answer : Option A

What substance was used as a moderator for the chain reaction in the first nuclear reactor? w) graphite x) boron y) water z) cadmium

Description : What substance was used as a moderator for the chain reaction in the first nuclear reactor? w) graphite x) boron y) water z) cadmium

Last Answer : ANSWER: W -- GRAPHITE

A fast breeder reactor employs (A) Graphite as moderator (B) Water as coolant (C) Molten sodium as coolant as well as moderator (D) U-235 as fuel

Description : A fast breeder reactor employs (A) Graphite as moderator (B) Water as coolant (C) Molten sodium as coolant as well as moderator (D) U-235 as fuel

Last Answer : (D) U-235 as fuel

A heterogeneous reactor is the one, in which the moderator and the (A) Coolant are different materials (B) Coolant are present in different phases (e.g., heavy water and graphite) (C) Fuel are present in different phases (e.g. uranium and heavy water) (D) None of these

Description : A heterogeneous reactor is the one, in which the moderator and the (A) Coolant are different materials (B) Coolant are present in different phases (e.g., heavy water and graphite) (C) Fuel are present in different phases (e.g. uranium and heavy water) (D) None of these

Last Answer : (C) Fuel are present in different phases (e.g. uranium and heavy water

Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide

Description : Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide

Last Answer : (1) Graphite Explanation: Graphite is used as a lubricant due to its slippery nature. Due to its loosely intact carbon atoms or free electrons, they can move around easily from one place to another, making graphite a good conductor of electricity.

Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide

Description : Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide

Last Answer : (1) Graphite Explanation: Graphite is used as a lubricant due to its slippery nature. Due to its loosely intact carbon atoms or free electrons, they can move around easily from one place to another, making graphite a good conductor of electricity.

Which of the following is used as a lubricant in heavy machines? (1) Bauxite (2) Sulphur (3) Phosphorus (4) Graphite

Description : Which of the following is used as a lubricant in heavy machines? (1) Bauxite (2) Sulphur (3) Phosphorus (4) Graphite

Last Answer : (4) Graphite Explanation: Graphite is used as a lubricant in heavy machines. it is made of carbon atoms arranged in sheets of hexagonal units - looks a lot like chicken-wire. Another sheet forms on ... ) between the sheets, so they are able to slide freely over each other without breaking any bonds.

Which of the following is used as a lubricant in heavy machines? (1) Bauxite (2) Sulphur (3) Phosphorus (4) Graphite

Description : Which of the following is used as a lubricant in heavy machines? (1) Bauxite (2) Sulphur (3) Phosphorus (4) Graphite

Last Answer : Graphite

In nuclear reactor, heavy water is used as – (1) coolant (2) fuel (3) moderator (4) atomic smasher

Description : In nuclear reactor, heavy water is used as – (1) coolant (2) fuel (3) moderator (4) atomic smasher

Last Answer : (3) moderator Explanation: Heavy water is used in certain types of nuclear reactors where it acts as a neutron moderator to slow down neutrons so that they are more likely to react with ... do not require uranium enrichment, heavy water reactors are of concern in regards to nuclear proliferation.

In a homogeneous nuclear reactor, the __________ are mixed together. (A) Fuel & coolant (B) Fuel & moderator (C) Coolant & moderator (D) None of these

Description : In a homogeneous nuclear reactor, the __________ are mixed together. (A) Fuel & coolant (B) Fuel & moderator (C) Coolant & moderator (D) None of these

Last Answer : (B) Fuel & moderator

A homogeneous reactor is the one, in which the (A) Fissile atoms are evenly distributed throughout the mass of nuclear reactor (B) Same substance (e.g. heavy water) is used as moderator & coolant (C) The fuel and the moderator is mixed to form a homogeneous material (D) All (A), (B) and (C)

Description : A homogeneous reactor is the one, in which the (A) Fissile atoms are evenly distributed throughout the mass of nuclear reactor (B) Same substance (e.g. heavy water) is used as moderator & coolant (C) The fuel and the moderator is mixed to form a homogeneous material (D) All (A), (B) and (C)

Last Answer : (C) The fuel and the moderator is mixed to form a homogeneous material

In nuclear reactor, heavy water is used as (1) coolant (2) fuel (3) moderator (4) atomic smasher

Description : In nuclear reactor, heavy water is used as (1) coolant (2) fuel (3) moderator (4) atomic smasher

Last Answer : moderator

What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Description : What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Last Answer : It's A and C. The sun and most other stars are fusion reaction engines, and hydrogen bomb (perhaps more properly a fusion nuclear weapon) apply nuclear fusion to do what they do.

What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Description : What Processes depend on fusion Check all that apply. A.energy production in the sun B.energy production in nuclear reactors C.the hydrogen bomb D.energy production from fuel cells?

Last Answer : Need answer

What fuel is used in nuclear reactors?

Description : What fuel is used in nuclear reactors?

Last Answer : A nuclear reactor is a device to initiate, control, and sustain a nuclear chain reaction. Nuclear power is energy produced from controlled nuclear reactions. When it comes to just standard fuel across the table it would have to be: Plutonium, Uranium, and Thorium.

Thermal shield is used in high powered nuclear reactors to (A) Protect the walls of the reactor from radiation damageB) Absorb the fast neutrons(C) Slow down the secondary neutrons(D) Protect the fuel element from coming in contact with the coolant

Description : Thermal shield is used in high powered nuclear reactors to (A) Protect the walls of the reactor from radiation damage B) Absorb the fast neutrons (C) Slow down the secondary neutrons (D) Protect the fuel element from coming in contact with the coolant

Last Answer : (A) Protect the walls of the reactor from radiation damage

Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher (A) Melting point, hence can be subjected to higher temperature (B) Density; hence core volume for a given power output would be smaller (C) Resistance to effects of irradiation (D) All (A), (B) and (C)

Description : Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher (A) Melting point, hence can be subjected to higher temperature (B) Density; hence core volume for a given ... be smaller (C) Resistance to effects of irradiation (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235. (A) 1 (B) 2 (C) 3 (D) 7

Description : Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235. (A) 1 (B) 2 (C) 3 (D) 7

Last Answer : (C) 3

Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material). (A) 15 (B) 45 (C) 65 (D) 85

Description : Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material). (A) 15 (B) 45 (C) 65 (D) 85

Last Answer : (D) 85

Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Description : Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.

Last Answer : ANSWER: Y -- NEUTRONS MODERATED TO RELATIVELY LOW ENERGIES.

_______is suitable as a lubricant for heavy-duty applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Description : _______is suitable as a lubricant for heavy-duty applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Last Answer : (b) Lubricating oil

________is suitable as a lubricant for low and moderate loads applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Description : ________is suitable as a lubricant for low and moderate loads applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air

Last Answer : (a) Grease

__________ moderator is used in a fast breeder reactor. (A) Graphite (B) Heavy water (C) Beryllium (D) No

Description : __________ moderator is used in a fast breeder reactor. (A) Graphite (B) Heavy water (C) Beryllium (D) No

Last Answer : (D) No

Zircaloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium (A) Tin, nickel, iron and chromium (B) And graphite

Description : Zircaloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium (A) Tin, nickel, iron and chromium (B) And graphite

Last Answer : (A) Tin, nickel, iron and chromium

Graphite is a good (A) Thermal & electrical insulator (B) Conductor of heat (C) Conductor of electricity (D) Both (B) & (C)

Description : Graphite is a good (A) Thermal & electrical insulator (B) Conductor of heat (C) Conductor of electricity (D) Both (B) & (C)

Last Answer : (D) Both (B) & (C)

Neutrons are slowed down in a nuclear reactor by – (1) Fissionable Material (2) Moderator (3) Control rods (4) Cooling system

Description : Neutrons are slowed down in a nuclear reactor by – (1) Fissionable Material (2) Moderator (3) Control rods (4) Cooling system

Last Answer : (2) Moderator Explanation: In thermal nuclear reactors, the coolant acts as a moderator that must slow down the neutrons before they can be efficiently absorbed by the fuel. It allows neutrons to slow down to energies where they can easily cause a nucleus to fission.

Neutrons are slowed down in a nuclear reactor by (1) Fissionable material (2) Moderator (3) Control rods (4) Cooling system

Description : Neutrons are slowed down in a nuclear reactor by (1) Fissionable material (2) Moderator (3) Control rods (4) Cooling system

Last Answer : Moderator

Which one of the following elements is essential for the construction of nuclear reactors? (1) Cobalt (2) Nicke (3) Zirconium (4) Tungsten

Description : Which one of the following elements is essential for the construction of nuclear reactors? (1) Cobalt (2) Nicke (3) Zirconium (4) Tungsten

Last Answer : (3) Zirconium Explanation: Zirconium is an essential element for the construction of nuclear reactors.

The basic process taking place in nuclear reactors is - (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Description : The basic process taking place in nuclear reactors is - (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Last Answer : (2) Fission Explanation: A nuclear reactor produces and controls the re-lease of energy from splitting the atoms of uranium, known as nuclear fission. When a fissile atomic nucleus such as uranium235 ... process produces free neutrons and gamma pho-tons, and releases a very large amount of energy.

The basic process taking place in nuclear reactors is (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Description : The basic process taking place in nuclear reactors is (1) Radioactivity (2) Fission (3) Fusion (4) None of the above

Last Answer : Fission

Which of the following is used as ‘a moderator in nuclear reactor? -General Knowledge

Description : Which of the following is used as ‘a moderator in nuclear reactor? -General Knowledge

Last Answer : The answer is 'Graphite '

Which of the following is used as ‘a moderator in nuclear reactor? -General Knowledge

Description : Which of the following is used as ‘a moderator in nuclear reactor? -General Knowledge

Last Answer : answer:

Which of the following is used as ‘a moderator in nuclear reactor? -General Knowledge

Description : Which of the following is used as ‘a moderator in nuclear reactor? -General Knowledge

Last Answer : answer:

Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The neutrons from the source are of high speed and en

Description : Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The neutrons from the source are of high speed and en

Last Answer : Moderator is a material which is used to slow down the neutrons produced during nuclear fission ... neutrons C. magnetic neutrons D. electric neutrons

Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The neutrons from the source are of high speed and en

Description : Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The neutrons from the source are of high speed and en

Last Answer : Moderator is a material which is used to slow down the neutrons produced during nuclear fission. The ... water B. Graphite C. Beryllium D. Sodium